When a broken hearted boy loses the treasured wooden nativity set that links him to his dead father, his worried mother persuades a lonely ill-tempered woodcarver to create a replacement, and to allow her son to watch him work on it.

A murder in Paris’ Louvre Museum and cryptic clues in some of Leonardo da Vinci’s most famous paintings lead to the discovery of a religious mystery. For 2,000 years a secret society closely guards information that — should it come to light — could rock the very foundations of Christianity.